or download this
open(DATA_FILE,"<:utf8",$filename) || die print "can not open reading
+file --> \"$filename\"";
open DB, '| /opt/postgresql-9.4/bin/psql -h ... (here all the paramete
+rs)'
print DB "copy $table($header) from STDIN CSV;\n";
while ( my $line = <DATA_FILE>) {
print DB "$line";
}